火硝是怎么制成的?

• 作 者: 卢金顺
• 机 构: 泊头市教育局,
• 出 处: 农村青少年科学探究
• 发表日期: 2004年期
• 关键词: 熬制 对我说 不知道 探究过程 要分离 二次结晶 热蒸发 溶解性 温度影响 过滤速率

父亲曾经对我说,在他小的时候,我的爷爷因病去世,奶奶独自扛起了生活的重担。当时家里没有劳动力,只能靠我奶奶的祖传秘技——熬制火硝来维持生计。当时秘技只传男不传女,但我奶奶是家里的独女,为了这门秘技不失传,无奈之下老太爷传给了我

My father once told me that at a young age my grandpa had died of illness and grandma alone had taken the burden of life. At that time, there was no work force in my family, and I could only rely on my grandmother's ancestral secret - to make a living from the fire. At that time, only pass the secret technology male but not female, but my grandmother is the only daughter of the family, in order to pass the secret of this pass, desperation Master handed me